Combined heating and cooling apparatus.



W. A. FREEMAN.

COMBINED HEATING AND COOLING APPARATUS.

APPLICATION FILED MAY 20, 1913.

Patented Nov. 17, 1914.

2 SHEETS-SHEET 1.

Witnesses W. A. FREEMAN.

COMBINED HEATING AND COOLING APPARATUS.

Y APPLICATION IIL ED MAY 20, 1913. 1,1 17,657. 1314.

, 2 SHEETSSHEET 2.

Patented Nov. 17,

Attorneys WILLIAM A. FREEMAN, OF SHREVEPORT, LOUISIANA.

Specification of Letters Patent.

COMBINED HEATING AND COOLING APPARATUS.

Patented Nov. 17, 1914..

Application filed May 20, 1913. Serial No. 768,895. 1 I

- To all whom it may concern Be it known that I, WILLIAM A. FREEMAN, a citizen of the United States, residing at Shreveport, in the parish of Caddo and State of Louisiana, have invented a new and useful Combined Heating and Cooling Apparatus, of which the following is a specification.

The present invention relates to 1n1provements in a combined heating and cooling apparatus, the same being especially adapted for use in connection with heating and cooling buildings, one object of the-invention being the provision of means for introducing into the building, outside atmosphere under pressure, which, when the cooling apparatus is employed, is cooled to the desired temperature to supply the various rooms of the building with cooled air for maintaining apredetermined temperature during the warm season, said apparatus being convertible in the winter time for heatmg such air and distributing the air through the building by the same outlets.

'With the foregoing and other objects in view which will appear'as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

In the drawingsFigure l-is a diagrammatic View partially in section of the complete apparatus. Fig.2 is an enlarged detail sectional view of the coil holding mem-- ber of the apparatus. Fig. 3 is a diagrammatic View showing the part of the mechanism employed when supplying heated 'air.

Referring to the drawings, the numeral 1 designates" a motor, Which is preferably an electric motor, which through the belt 2 operates a crank shaft 3, said crank shaft being provided spectively.

with two cranks 4 and, 5

When the device is used for cooling air, the crank 1 is operably connected to oscillate the ammonia circulating pump or member 6. The usual ammonia supply and storage tank 7 is employed, and has led therefrom the valve connection 8,. connected to the conduit 9 in which is disposed the high pressure gage 10, a hand valve 11 being mounted at the upper end thereof and at the connection'of the pipe 9 with the coil 12. This coil 12, as clearly shown in Figs. 1 and 2, is mounted within-the upper chamber 13 of the casing 14 and has its lower end connected to the conduit 15, which is led to the circulating apparatus 6. conduit 16 is led from the: apparatus 6 and is provided with a handvalve 17 said conduit 16 being connected to the upper portion of the condensing coil 18, mounted within and surrounded by the water within the lower compartment 19 of the casing 14. The compartments 19 and '14: provide an intermediatethrough the hand valve casing 24 to the ammonia supplying tank 7.

By this means it will be seen that the operation of the circulating apparatus will cause the proper circulating of the ammonia to and from the tank 7 and thus-produce the necessary cooling effect in the upper chamber '13 of the casing 14..

In order to provide ameans for supplying air to the chamber 13 .to be cooled by the coil 12, anair inlet pipe 28 is provided, the same being provided with thepipes 29 and 29' having check. valves therein which lead to the air supplyin pump 27 said pump being operated through the crank 5 of the shaft 3 so that a double acting effect is produced, to direct the compressed 1 air through the branches -30 provided with check valves 3131, into the conduit 32. This conduit 32 is led into the lower end of the chamber from the ordinary main, and the float con- 65 13, and after the'air has been cooled by contact with the coil 12,- is delivered through the conduit 33 and perforations 34 into the rooms to be cooled.

The capacity of the present apparatus may be so designed as to be used in connection with small or large residences, or office buildings, it simply being necessary that the cooling apparatus be so disposed, as to properly cool the air admitted into the chamber 13 and finally distributed to thedesired points through the pipe';=33.

' In order to render the device automatic, due to the predetermined temperature that it is desired to maintain in the building, the main'conductors L, which are supplied by [electricity from the main, is controlled through the mercury thermostat T, which is contained in a shunt circuit led from the main L to the solenoid or electromagnet 35, which when properly energized operates the switch 36 to close the circuit to the motor 1. Thus'when the mercury in the thermostat T due to the rise of temperature closes the circuit, it is evident that the motor 1 will be operated to operate both the circulating device 6 for the ammonia and the air supplying device 27. Thus it will be seen that it is not necessary to operate the motor 1 all the time, the temperature maintained in the room controlling such action at all times.

In order to render the present device interchangeable for use in connection with supplying heated air to the building, a hand controlled three-way Valve 37 is mounted in the conduit 32, so that the air may be prevented from entering the chamber 13, and diverted into the-coil 18, such coil at that time being isolated from the ammonia tank 7 due to the closure of the valves 17, 8 and 24, the valve 11 also being closed, while the valve 39 of the pipe 38 is opened, thus permitting air to flow from the compressor 27 through the conduit 40 into the upper end of the coil 18, through the pipe 22 and pipe 38 into the outletting or directing pipe 33.

In order to properly heat the water within the chamber 19 so that the air within the culating device 6 is disconnected so as not to be operated, it simply being essential that the compressor 27 be operated to circulate the air from the inlet pipe 28 through the outlets 34.

By means of the conduit 25, which is led trolled valve 26, the water level within the chamber 19 is maintained both when the device is used for cooling air and when heating the air.

From the foregoing description taken in connection with the drawings it 1s evident that a system constructed according to the present invention, is readily adaptable for usefor heating air in the cooler months and forcooling the air in the warmer months of the year, thus making the system interchangeable to maintain the desired temperature throughout the building regardless of the outside temperature.

.Whatis claimed is:

1. A convertible air circulating apparatus, including an air compressor, two compartments, a cooling coil in one compartment, a circulating coil in the other compartment, said coils being in communication with each other, said compressor being in communication with the cooling coil compartment, an air distributing conduit in communication with the cooling coil compartment, a tank in communication with the cooling coil, a circulating device for creating a circulation through the two coils and from the tank, means for changing the temperature of the circulating coil, means for connecting the air compressor to the circulating coil and disconnecting it from the cooling coil compartment, and means for disconnecting the circulating device and tank from the coils and for connecting the circulating coil to the air distributing conduit.

2. A convertible air circulating appara tus, including a motor, an air compressor operably connected thereto, a. casing divided into two superposed chambers, said compressor being in communication with the upper chamber, an air distributing pipe leadingfrom the upper chamber, two coils, one in each chamber, means for maintaining a water level in the lower chamber, a tank in communication with thecoil in the upper chamber, a circulating device connected to both coils, said lower coil being in communication with the tank, means for changing the temperature of the water in the lower chamber, means for cutting the tank and circulating device from the coils. means for cutting the compressor from the upper chamber and for connectingit with the lower coil, and means for connecting the lower coil to the air distributing pipe.

3. An air circulating apparatus, including a motor, an air compressor operably connected thereto, a casing divided into two superposed chambers, a coil mounted in each chamber, means for maintaining a water level in the lower chamber, an ammonia tank in communication with the coil in the upper chamber, an ammonia circulating device connected to both coils for directing the In testimony that I claim the foregoing as ammonia gas from the upper to the lower my own, I have hereto affixed my slgnature coil, said lower coil being connected to the in the'presence of two witnesses.

ammonia tank, a conduit leading from the WILLIAM A. FREEMAN. air compressor to the upper chamber, and Witnesses: an air distributing conduit leading from the A. C. BAINS,

upper chamber. W. GREENE. 

